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Finding the Fourth Proportional to 17,555.56, 26,321.04 and 6,460.81

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Solution

The fourth proportional to 17,555.56, 26,321.04 and 6,460.81 is: 9,686.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,555.56 : 26,321.04 = 6,460.81 : x
  2. Step 2: Convert to fraction form
    17,555.56/26,321.04 = 6,460.81/x
  3. Step 3: Cross multiply
    17,555.56x = 26,321.04 × 6,460.81
  4. Step 4: Simplify right side
    17,555.56x = 170,055,145.05
  5. Step 5: Solve for x
    x = 170,055,145.05/17,555.56
  6. Step 6: Final answer
    x = 9,686.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.